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OTL, Output Transformerless Amplifier User Group.

You are looking at the ground side of the driver supply.

So they are all connected together.

Just a point of fact- differential amplifiers are inherently much more immune to power supply issues than single-ended circuits. IOW in addition to Common Mode Rejection, there is also a Cross Mode Rejection figure.

With a differential amplifier that employs a 2-stage constant current source, this value is quite high. IOW improving the differential effect of the voltage amplifier will yield more sonic improvement than increasing the value of the filter caps or changing their construction characteristics.

The one place this does not apply is the cathode follower driver circuit. It does benefit from good quality bypass. Once you have a 200uf value though you will find that additional increase does not yield further sonic benefit.



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  • You are looking at the ground side of the driver supply. - Ralph 11:07:24 01/05/16 (0)

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